feat(en-pages): build remaining 14 pages (Editorial / Forms / Hubs / Legal)

Brings the EN site to 34 live pages, completing the original sitemap
from PDF Strategie & Contenu Partie C.1.

Editorial section (5 pages, page-editorial-detail.php template)
- /why-asterion/, /about/, /customers/, /trust/, /partners/
- inc/editorial-data.php centralizes the copy from D.18-D.21, D.28
- Reuses the industry-detail partial (same section schema)

Conversion section (4 pages, page-conversion-form.php template)
- /request-demo/, /request-te-kit/, /request-quote/, /contact/
- inc/forms-data.php declares fields per page (text/email/select/textarea)
- template-parts/conversion-form.php renders two-column layout
  (form left, promise right), eligibility list (T&E), FAQ (Demo)
- inc/form-handler.php: nonce-protected POST handler with honeypot,
  per-field sanitizer, wp_mail to AV_LEADS_RECIPIENT (defaults to
  jerome.foucher@asterionvr.com, override via wp-config.php define),
  redirect-back-with-status pattern.

Insights & Resources (page-insights-hub.php, page-resources.php)
- /insights/ queries `post`, falls back to placeholder when empty
- /resources/ lists 4 resource groups (datasheets, whitepapers,
  videos, brochures) per D.23

Legal (page-legal.php template, parent + 4 children)
- /legal/, /legal/privacy/, /legal/terms/, /legal/cookies/, /legal/notice/
- Renders page content if filled, falls back to slug-driven section
  skeleton (per D.29) for counsel to draft against.

All 16 new URLs verified HTTP 200, sizes 49-66 KB each. Mu-plugin
asterion-seed-rest.php in LocalWP self-deleted after seeding.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

wp-content/themes/asterion-bricks/templates/page-editorial-detail.php

@@ -0,0 +1,28 @@
+<?php
+/**
+ * Template Name: Editorial Detail
+ *
+ * Custom page template for editorial pages (Why Asterion, About, Customers
+ * hub, Trust, Partners). Reuses the industry-detail partial.
+ *
+ * @package AsterionBricks
+ */
+defined('ABSPATH') || exit;
+
+$slug = get_post_field('post_name', get_queried_object_id());
+$data = include AV_THEME_DIR . '/inc/editorial-data.php';
+
+if (! isset($data[$slug])) {
+    get_header();
+    echo '<section class="av-section"><div class="av-container">';
+    echo '<h1>' . esc_html(get_the_title()) . '</h1>';
+    echo '<p>' . esc_html__('Editorial data not found for slug:', 'asterion-bricks') . ' ' . esc_html($slug) . '</p>';
+    echo '</div></section>';
+    get_footer();
+    return;
+}
+
+get_header();
+set_query_var('av_industry', $data[$slug]);
+get_template_part('template-parts/industry-detail');
+get_footer();